<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="title-container">
        <h3 class="title">
          <img src="@/assets/common/login-logo.png" alt="">
        </h3>
      </div>

      <el-form-item prop="mobile">
        <span class="svg-container">
          <svg-icon icon-class="user" />
        </span>
        <el-input
          ref="mobile"
          v-model="loginForm.mobile"
          placeholder="手机号："
          name="mobile"
          type="text"
          tabindex="1"
          auto-complete="on"
        />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon icon-class="password" />
        </span>
        <el-input
          :key="passwordType"
          ref="password"
          v-model="loginForm.password"
          :type="passwordType"
          placeholder="Password"
          name="password"
          tabindex="2"
          auto-complete="on"
          @keyup.enter.native="handleLogin"
        />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
        </span>
      </el-form-item>
      <!-- 组件身上绑定的原生事件真的是原生事件么？【原生=自带的】
      组件身上绑定的任何事件都是自定义事件
      自定义就需要组件内执行才行，内部$emit来触发（组件内可能绑定了原生事件）
      如果支持可以直接绑定原生事件，如果不支持可以考虑采用.native修饰符
      .native修饰符作用：
      它会给组件内根标签绑定原生的事件
      这个修饰符是vue的
       -->
      <el-button :loading="loading" type="primary" style="width:100%;margin-bottom:30px;" class="login_btn" @click.native.prevent="handleLogin">登 录</el-button>

      <div class="tips">
        <span style="margin-right:20px;"> 用户名: 13800000002 </span>
        <span> 密码: 123456 </span>
        <span @click="loginFn">测试</span>
      </div>

    </el-form>
  </div>
</template>

<script>
import { getUserProfileAPI } from '@/api'
import { validUsername } from '@/utils/validate'

export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('请输入正确用户名'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('密码不能小于6位'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        mobile: '13800000002',
        password: '123456'
      },
      loginRules: {
        mobile: [{ required: true, trigger: 'blur', validator: validateUsername }],
        password: [{ required: true, trigger: 'blur', validator: validatePassword }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined
    }
  },
  watch: {
    $route: {
      // 在路由跳转回来, 会把未遂地址路径保存到redirect变量上, 但是要求你前面的页面退出登录时传递过来参数=>要用redirect
      // replace(`/login?redirect=${this.$route.fullPath}`)
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    // 切换密码框效果
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    // 登录的点击事件
    handleLogin() {
      this.$refs.loginForm.validate(async valid => {
        if (valid) {
          try {
            this.loading = true
            const res = await this.$store.dispatch('user/loginActions', this.loginForm)
            console.log('请求成功', res)
            this.$message.success(res.message)
            this.loading = false
            // 不产生记录跳转
            // 目标：先取下/login 地址栏携带的未遂地址参数
            const url = this.$route.query.url
            this.$router.replace(url || '/')
          } catch (err) {
            this.$message.error(err)
            this.loading = false
          }
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    // 测试
    async loginFn() {
      try {
        const { data } = await getUserProfileAPI()
        console.log(data)
      } catch (err) {
        console.dir(err)
      }
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#283443;
$light_gray: #68b0fe;  // 将输入框颜色改成蓝色
$cursor: #68b0fe; // 将输入框光标改成蓝色

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    // background: rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.7);
    border-radius: 5px;
    color: #454545;
  }
  /* reset element-ui css */
  .el-form-item__error {
    font-size: 14px
  }
}
</style>

<style lang="scss" scoped>
$bg:#2d3a4b;
$dark_gray:#889aa4;
$light_gray:#eee;

.login-container {
  min-height: 100%;
  width: 100%;
  // background-color: $bg;
  // ~@ 代表src文件
  background-image: url('~@/assets/common/login.jpg'); // 设置背景图片
  background-position: center; // 将图片位置设置为充满整个屏幕
  overflow: hidden;
  .login_btn{
    background: #407ffe;
    height: 64px;
    line-height: 32px;
    font-size: 24px;
  }
  .login-form {
    position: relative;
    width: 520px;
    max-width: 100%;
    padding: 160px 35px 0;
    margin: 0 auto;
    overflow: hidden;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
